PLEASE HELP a. How does ion exchange work? Why does it remove calcium ions (Caạt) and magnesium
ions (Mg?") from hard water? (4 points)
b. What occurs during the recharge process? Why is recharging with a salt brine solution
that contains sodium chloride (NaCl) necessary? (4 points)

c. is the answer

by love gaming

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.